What are contraband guns and weapon blueprints in Warzone 2.0's DMZ mode?

sportskeeda.com:

Warzone 2.0 is launching globally in a few hours, after which the entire community will be flooding the servers to experience this new title first-hand. The game will share a common platform with Modern Warfare 2 to enable seamless cross-progression between all the different games.

Warzone 2.0 will introduce a highly anticipated game mode that has been in development for a long time, called DMZ. DMZ, or Demilitarized Zone, is going to be Call of Duty’s vision of Escape From Tarkov and provide a sandbox survival experience to the entire player base. Along with this massive new game mode, the community will witness the beginning of Season 1 along with a Battle Pass that will be shared across all titles.

Fighting for survival in a Battle Royale like Warzone 2.0 is drastically different from trying to survive by gathering loot and roaming through buildings to obtain some form of weaponry to fight back enemies, despite deploying on the same map. This mode will maximize the rewards for players who use strategy and tactical advantage to win fights and minimize wasting resources since the land will not be bountiful.

Players will have to complete a mission or a set of objectives that will be provided to them in order to secure extraction out of the DMZ mode. The stakes are higher in this game mode as fans can lose their collected loot if they are killed in gunfights or similar skirmishes as the map becomes a hunting ground.

Fortunately, Warzone 2.0’s DMZ will provide players with the opportunity to secure firearms but it will require a fair amount of work as they have to scour the massive map of Al Mazrah and check every nook and cranny for weapons, bullets, and other supplies. All of the weapons currently present in the arsenal will